Composite insert for insoles



Dec. 19, v.1944. M, MARGOLlN 2,365,203

COMPOSITE INSERT FOR INSOLES Filed Juiy 1o, 1942 vFIGLB.

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ATTORNEYS Patented Dec. 19, 1944 UNITED STATES PATENT OFFICE COMPOSITE INSERT FOR INSOLES Meyer Margolin, Elgin, Ill. y

Application July 10, 1942, Serial No. 450,380

l (c1. se-s) claims,

The present invention relates to a novel shoe insole and more particularly to a'shoe insole containing in an opening in the forepart thereof a` composite insert novelly formed to provide grooves for increased breathing characteristics,r

and to an insole cover pad, covering the heel and l permanently prevent sagging of this part andv to `properly ll the function of providing air circulation by flexing.

It is the object of the present invention toprovide a novel method of forming, an improved insert adapted to be positioned in an Aopening in an insole, the insert havingpocketdike grooves which will eifect the circulation of air.

It is a further object of the present invention to provide an insole pad containing grooves which will increase the resilience and breathing prop-k erties of the shoe.

It is a further object of the 'present invention to provide an insert or pad construction in which grooves are formed Without a molding operation.

These objects I accomplish generally by cutting out of a sheet of high quality resilient rubber an insert element to a shape adapted to fit into an opening in the forepart of an insole, then cutting transverse slots in the insert element and finally adhesively securing this insert element to a fabric cover member, the fabric cover member then being secured, for example by stitching, over an opening in the forepart of an insole.

The insole cover pad is similarly formed to provide grooves by die cutting slots in a pad element cut from a layer of rubber and then adhesively securing this slotted rubberp pad element to a cover member such as a fabric.

The specific description of my invention will be apparent from a consideration of the drawing and description thereof which follows.

Figure 1 is a plan view of the section of al sheet of rubber which has been cut to the shape ofthe opening in which it is to be positioned,the insert containing the groove forming slots.

form the grooves and which is adapted to be secured into the insole'.

Figure 3 is a cross section Lof Figure 2 taken along the line 3 3 thereof.

Figure 4 is a plan view of the insole cover pad of my invention.

Figure 5 is a plan view of an insole showing the insert and insole pad thereon. l

Figure `6 is a cross section along the line 6 of Figure 5. l

Referring now more specifically `to'Figure l, according to my invention I cut out, as by die cutting fro-m a rubber sheet, an insert element generally denoted as I0 which is adapted to fit into an opening in ran insole. Iy simultaneously or subsequently die cut slots II in this insert element, these slots having an appreciable width as shown diagrammaticall-y and 4closed end Walls, these slots being contained entirely within the. insert element. The insert element I0 containing the slots II is then adhesively secured as shown in Figure 2 to a fabric I2 of suitable size and shape, after which holes or perforations I4 arepunched through the .fabric and insert composite which perforations facilitate the movement of the air to the insole.

In Figure 3 the composite is shown in'cross section so that the formation of the grooves can be more easily understood. The insert element I 0 containing the slots II. is securely adhered on to the cover or textile backing member'IZ. The cover member I2 therefore closes one end of the slots II and grooves are thus formed having substantially parallel side walls spaced apart from one another and extending a substantial distance across the insert. The slots II do not extend to the edge of the insert element and therefore such grooves have closed end walls forming a pocket closed on allbut one side. The grooves are thus simply formed by adhering the slotted rubber insert element I0 to a fabric cover I2, the fabric cover I2 closing one end of the slot II 'and thus forming a pocket-like groove'which upon flexing will pump air in and out. y

Perforations I4 extend through'both the insert element II) and the cover member I2. The function of this element generally will be described in connection with Figures 5 and 6 which show it in position in an insole.

In Figure 4 I show an insole cover pad element I1 having slots I8 cut as by die cutting therein.

Figures 5 and 6 show an insole 20 with an openingr 2I cut in the forepart thereof. Disposed in f the opening 2l is the composite insert comprising the insert element I0 Vand the cover membern.

The insert is secured to the insole by the line of stitching 22 which extends vertically through the cover member l2 and through the insole 20, and runs around the periphery of the opening 2|.

As can be seen in Figure 6, the rubber insert portion l0 is thicker than the insole 20 and extends below` the plane of the insole. Grooves Il which are on the bottom of the insole provide pockets which upon the flexing of the insert in the action of walking cause theair to be pumped by the periodic moving apart and together of the side wallsof the grooves. The cover member I2 is substantially impervious to air so that the airis forced out from the grooves l l and up through the perfcrations I4 which extend through the insert element I0 and the cover member ,12.

The insole pad I1 is adhesively secured to the insole 20 and subsequently .perforated with punches 24 to provide air holes or perforations. By adhesively securing the insole pad containing the slots i8. totheinsole -20 Iform grooves `:2&5 which are closed on all butbneside and which `have side wallsspaced .from'onean'other to pro vide air pumping grooves of the type describe-d .hereinbefore vThe forward'end 2T of theinsole pad is bevelled down to a featheredge to insure fcontinuity of contour between the forepart'and the arch part of the insole.

. Thus, according to my invention I forman insole having grooves which induce air circulation, 1'

fthe grooves being formed simply by a die cutting operation of arubber sheeting. By employing a cover l.member having greater tensile strength than rubber itself, I kprevent, -the `sagging or .spreading previously experienced in constructions in which the entire element 'is molded vin one Vpiece of rubber.

The strengthimparted to theinsert by compositing it with a fabric textile .is lan important feature of this vinventionssince itis necessary to prevent sagging, tearing or spreading of the in- :sertxwhich is under i'constant tension duringxuse tof the-shoe.

Various other modifications 'of my present K4in- :vention rwill suggest themselves ;to those skilled rscribed in connection with the above explanation.

'I claim:

1. An insole having an opening in the forepart thereof, an insert disposed in said opening, said insert being compositedfrom a cover member and a resilient insert element, said resilient insert element having slots, said slotted resilient insert element being secured to said cover member so as to close one end of said slots, said cover member being secured to said insole.

2. An insole having an opening in the forepart thereof, an insert disposed in'said opening, said insert being composited from a cover `member and a resilient insert element, said resilient insert element having slots extending partially across said resilient insert element, said slotted resilient insert element being adhesively secured to said .covermember so as to close one end of said slots, thus forming grooves having but one open side "facing downwardly, said cover member being secured to said insole. i

3. An insole having an opening in the forepart thereof, an insert disposed in said opening, :'said insert being compositedrom afabric cover member, and a resilient insert element, said Vresilient insert element having slots extending partially across said resilient insert element, said slotted resilient insert element being adhesively secured to said cover member so Vas to close oneendi-'of said slots, thus forming grooves Vhavingrbutone openside facing downwardly, said "cover'member being'secured'to said insole on the area surrounding said opening, and perforations extending through said covermember andsaid'resilientinsert element.

4. In combination, an insole-and an'insolecover pad, said cover pad being formed of a resilient 'rubber-like material, slots .extendingthrough and lpartially across 'said cover pad, said cover "pad being adhesively secured to said insole to close yone'end of said slots, thus forminggrooveszhaving one open side. r

5. In combination, an insoleandfa'n insole cover pad, -said cover pad Vbeing formed of `a resilient yrubber-like material, slots `extending through and partially across said .cover pad, said 'cover pad being adhesively secured tosaid insole to fclose oneendofsaid slots,` thus forming grooves Lhaving one open side, and perforations `extending through said cover pad and said insole.

'M'EYER IMARGOLIN. 

